Tinuvin 292 is a liquid hindered amine light stabilizer, mainly used in the coating field. It can significantly extend the service life of coatings by reducing coating defects such as cracking, loss of gloss, yellowing, bubbling and delamination. Tinuvin 292 demonstrates outstanding performance in both water-based and solvent-based coatings and has good compatibility with a variety of coating systems, including one-component and two-component polyurethanes, thermoplastic acrylic, thermosetting acrylic, alkyd resins, polyester, phenolic resins, vinyl resins, etc.
The specific application fields of light stabilizer 292 include automotive original factory paint, automotive refinish paint, architectural coatings, digital printing, furniture and floor care, industrial coatings, Marine coatings, paper and paperboard, etc. In addition, Tinuvin 292 can also be used in fields such as inks and adhesives, and is applied in hot-melt, reactive, solvent-based, water-based and radiation-curing adhesives and sealants. Let’s take a closer look at the application of tinuvin 292.
Long-term protection in the field of automotive coatings
Automobile Original Factory paint (OEM)
In the waterborne acrylic polyurethane topcoat of a certain car manufacturer, Tinuvin 292 was compounded with the UV absorber Tinuvin 1130. As a result, the coating’s gloss loss rate was only 3% after 500 hours of outdoor exposure test in Florida, while the gloss loss rate of the control group without the addition exceeded 20%. This combination effectively inhibits the yellowing and cracking of the car paint caused by ultraviolet rays, and extends the service life of the original factory paint.
Automobile refinish paint
In the two-component polyurethane refinish paint of a certain international paint brand, Tinuvin 292 serves as the core light stabilizer, combined with hindered phenolic antioxidants. This enables the repaired body coating to maintain over 90% of its initial gloss after 1000 hours in the accelerated aging test (QUV-B 313nm). It significantly enhances the durability consistency between the touch-up paint and the original factory paint.
Anti-aging practice of industrial and architectural coatings
Anti-corrosion of steel structures for cross-sea Bridges
In the epoxy zinc-rich primer and topcoat system of a certain cross-sea bridge, Tinuvin 292 works in synergy with nano-titanium dioxide, enhancing the salt spray resistance of the coating from 1,000 hours of the traditional formula to 2,000 hours. Meanwhile, after 5,000 hours of artificial climate aging (xenon lamp irradiation), the coating shows no obvious powdering or cracking. This high-performance protection solution has been applied to multiple coastal industrial facilities.
Exterior wall coatings for high-rise buildings
In the fluorocarbon exterior coating of a certain super high-rise building, Tinuvin 292 was combined with hydroxyl acrylic resin. Through the optimization of the formula, the color change ΔE value of the coating after three years of outdoor exposure in the Guangzhou area was less than 1.5 (ISO 11664 standard), which was far better than the industry average requirement of ΔE<3. It effectively maintains the long-term beauty of the building’s appearance.
Innovative applications of special materials in emerging fields
Medical-grade transparent nylon
In the endoscope lens material of a certain medical equipment company, uv absorber 292 is compounded with cyclohexane dimethanol ester (CHDM), which enables the light transmittance of transparent nylon (PA12) to remain above 80% after 1000 hours of outdoor exposure, while the yellowing ΔE is less than 2.0. Meet the strict requirements of medical equipment for optical stability and biocompatibility.
Radiation-cured ink
In the UV-curable ink developed by a certain digital printing enterprise, uv stabilizer 292 works in synergy with photoinitiators, causing the color density of the printed matter to decay by less than 5% after 200 hours of simulated sunlight exposure (300-400nm), which is significantly better than the control group without added materials (decay by 15%). Long-lasting display suitable for outdoor advertising and packaging labels.
Breakthroughs in the weather resistance of adhesives and sealants
Photovoltaic module encapsulation adhesive
In a certain silicone sealant for photovoltaic film, Tinuvin 292 was compounded with hindered amine light stabilizer. After 1000 hours of wet heat aging at 85 ° C /85% RH, the tensile strength retention rate of the film increased from 60% to 85%, effectively preventing seal failure caused by ultraviolet rays and water vapor. It has extended the service life of photovoltaic modules.
Hot melt adhesive for outdoor furniture
In the hot-melt EVA adhesive adopted by a certain outdoor furniture manufacturer, after adding Tinuvin 292, the bonding strength attenuation in the cold and hot cycle test from -40 ℃ to 80℃ decreased from 35% to 12%, significantly enhancing the structural stability of outdoor furniture under extreme weather conditions.
Upgrading of protection for ships and Marine engineering
In the acrylic polyurethane hull paint of a certain ship coating enterprise, Tinuvin 292 was compounded with zinc phosphate anti-rust pigment. After being exposed to the Marine salt spray environment (5% NaCl solution) for 5,000 hours, the rusted area was less than 2%, and the impact resistance performance (50cm drop hammer test) remained intact. Meet the long-term protection standards of the International Maritime Organization (IMO).
Technological advantages and synergy effects
The high efficiency of Tinuvin 292 is often demonstrated through the synergistic effect with other additives. For example:
Uv absorber 292 combined with ultraviolet absorbers (such as Tinuvin 1130) : In automotive varnishes, this combination can extend the weather resistance life of the coating by more than three times.
Combined with nano-fillers: In water-based industrial coatings, when Tinuvin 292 is compounded with wet-process sericite, it not only enhances weather resistance but also increases the wear resistance of the coating by 40%.
These cases demonstrate that Tinuvin 292, through precise formula design, has become a core solution for enhancing the outdoor durability of materials and is widely used in high-end fields with strict weather resistance requirements.
